CRYPTO

Cryptography Challenge Quiz

Test your knowledge of cryptography with our engaging quiz! Dive into the fascinating world of cryptography, where you will explore various methods, algorithms, and principles of secure communication.

This quiz features 24 carefully crafted questions covering topics like symmetric and asymmetric encryption, hash functions, and cryptographic protocols. Prepare to challenge yourself!

24 Multiple Choice and Checkbox Questions
Learn about different cryptographic concepts
Perfect for students, educators, and enthusiasts

24 Questions6 MinutesCreated by EncryptingDragon521

Which generates a shared key

Symetric

Diffie Hellman

Asymetric

Hash

Affine Cipher N=24

192

168

172

146

RSA P=3 Q=5 D=13

Public vs Symetric

Public keys more efficient

Public key uses more keys

Symetric keys shorter encryption

Public Based on mathematicl problem

What does Cryptography not deal with

Authentication

Complexity

Integrity

Secrecy

Best definition of cryptography

Combination of both encryption and decryption

A set of methods for decrypting ciphertexts

The science and art of transforming messages

A method of transforming plaintext to ciphertext

CEASER CIPHER VWDBKRPH

COVID19

LOCKDOWN

SAVEME

STAYHOME

Which are correct

XORing a random sequence

All of the group generators are prime

Equivlance of ap-1 = mod p

AES-125 is a secure hash function using 128 bits

M XOR K Cannot be used as encryption

336 =mod 3

Cryptographic hash functions can be used for integrity checking

For a hash function H, there exists differnent messages

SHA256

Secure Hash Algorithim 256bit

Uses 2 keys

Produces irreversible hashes

Produces unique hashes

Diffie Hellman Protocol

Can be used by 1 person only

Key exchange between 2 parties

Allows both to use a public key to encrypt and decrypt via symmetric cryptography

Allows both to use a public key to encrypt and decrypt via asymmetric cryptography

Man in the middle attack

Attacker intercepts 2 parties

Attack destroys line of communication

Attacker relays messages

Attacker hacks one party

Block Cipher

Encrypts in bits

Encrypts in blocks

Stream cipher

Encrypts byte by byte

Encrypts in blocks

Kerchoff principle

Security of a system should rely on confidentiality of both parties

Security of a system should rely on confidentiality of the underlying algorithm

Security of a system should rely on anonimity of attackers

Security of a system should rely on confidentiality of the key

Security of a system should rely on confidentiality of decryption mechanism

Symetric key

2 Key to encrypt and decrypt

1 Key to encrypt and decrypt

Asymetric key

2 Key to encrypt and decrypt

1 Key to encrypt and decrypt

Cryptography provides

Non-Repudation

Confidentiality

Integrity

Authentication

Monoalphabetic cipher

Each letter of plaintext replaced by another letter based on key

Based on subsititution with multiple substitution alphabets

Polyalphabetic cipher

Based on subsititution with multiple substitution alphabets

Each letter of plaintext replaced by another letter based on key

Hashing

1 Way operation

Removes ability to decrypt

2 Way operation

Cipher

1 Way operation

2 Way operation

Removes ability to decrypt

CRYPTO

Cryptography Challenge Quiz

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